Bookcase



FIG. 1 is a perspective view showing my new design of a bookcase;

FIG. 2 is a top plan view of the bookcase shown in FIG. 1;

FIG. 3 is a front elevational view of the bookcase shown in FIGS. 1 and 2, the rear being a mirror image of the front; and,

FIG. 4 is an end view of the bookcase as shown in FIGS. 1 to 3, the opposite end being a mirror image of the end shown. 

The ornamental design for a bookcase, as shown and described. 